public void ContractUpdate_AddAmount_DeliveredAmountIncreased()
{
Material testMaterial = new Material("E1", "Jern");
Customer testCustomer = new Customer(1, "STENA", "Danmark");
ContractLine testContractLine = new ContractLine(1, testMaterial, 1000, 0, 0, true, "test comment");
cr.AddContract(testCustomer, DateTime.Now, 0, "SH");
Contract actual = cr.GetContracts()[0];
actual.Id = 1;
actual.ContractLines.Add(testContractLine);
Assert.AreEqual(0, actual.ContractLines.First().DeliveredAmount);
cr.AddAmount(actual.Id, testContractLine.Id, 25);
actual = cr.GetContracts()[0];
Assert.AreEqual(25, actual.ContractLines.First().DeliveredAmount);
cr.AddAmount(actual.Id, testContractLine.Id, -25);
}